Logic Masters Deutschland e.V.

▚▚ Summing-Zipper-Loop ▞▞

(Published on 2. March 2024, 07:15 by ElChiglia)



---- RULES ----

Normal Sudoku rules apply: Fill the grid with digits 1 to 9 appearing once each in every row, column, and 3x3 box.

Region Sum Loop: Draw a single 1-cell-wide loop of orthogonally connected cells into the grid. Different loop segments cannot touch, not even diagonally. The loop acts as a Region Sum Line. Numbers on a Region Sum Line have the same sum in each 3x3 box the line passes through. If a line passes through a 3x3 box multiple times, each individual segment sums separately.

Zipper Lines: Digits an equal distance from the center of a lavender line sum to the digit in the middle of that line.

Circles: Cells containing a circle must be on the loop and the digit in it counts the total number of cells in the respective 3x3 box that are part of the loop, including itself.

Less-than: The Less-than sign points towards the lower of the two adjacent digits.

---- LINKS ----

Solve this puzzle using SudokuPad


This Sudoku is part of my series of "build-your-own-loop Sudokus". If you liked solving this puzzle or if you prefer other combinations of loop logic and constraints, feel free to give the other sudokus of the series a go too:

Loop Logic Loop Constraint Further Constraints
Mid-Loop Mid-Loop
logic
Entropic Line Kropki Dots
Whispering-Zipper-
Loop
Counting Cells Dutch Whispers Zipper Lines
X-clues
Super Bowl
Loop
Oponents,
out-of-bounce
Polarity Line Kropkis, XV,
Nabner, Zipper
Linesweeper
Loop
Linesweeper
clues
Parity Line Little Killers
Modular-Zipper-
Loop
Counting Cells Modular Line Zipper Lines
X-clues
Balance Loop Balance clues Parity Line Little Killers
Entropic-Zipper-
Loop
Counting Cells Entropic Line Zipper Lines
X-clues
Hiking-through-
the-Fog Loop
Signposts Dutch Whisper,
Polarity Line
Kropki Dots
X-clues
Renbanimo Loop Pentominos
Guiding Cells
Renbanimos Kropki Dots
Odd cells
Deceiving Loop Wrogn Clues Wrogn Clues 9 different
constraints
Count-the-
Whispers Loop
Counting Cells German Whispers Kropki Dot
Whisper-me-
Sum-thing
Loop
Line-sums German Whispers Kropki Dots
Road Running
Loop
Road Runner Parity Line Kropki Dots
Magically
Modifying Loop
- Incrementers,
Decrementers,
Nullifiers
Magic Squares,
Killer cages,
Kropki Dots
Skiing Loop Gates German Whispers Kropki Dot,
Between Lines
Behaving Loop 3x3 boxes Polarity Line Kropki Dots
Magical Loop Guiding cells Modular Line Magic Squares
Foggy Loop Guiding cells Parity Line Fog of War,
Killer Cages
10-Suȵ Loop Moon-or-Sun 10-Line Killer Cages
Counting Loop Galaxies Counting Line Killer Cages,
Kropki Dots,
Quadruple Clues
Shining Loop Moon-or-Sun Parity Line Killer Cages
Interfering Loops Slitherlink
+ Masyu
Entropic Line
+ Parity Line
Killer Cages
Slithering Loop Slitherlink Entropic Line Killer Cages,
Little Killer
BigBang Loop Galaxies Parity Line Row/Column Indexer,
Kropki Dots
Summing Loop Star Battle Region Sum Line Killer Cages,
Skyscraper,
Kropki Dots
Whispering Loop Star Battle German Whispers Sandwich Sum



Solution code: Column 8, followed by row 8

Last changed on on 8. March 2024, 17:22

Solved by jkuo7, seeppp, Bootenks, bansalsaab, OutOfMyMindBRB, Snookerfan, samuel1997, Gilliatt, yttrio, Cheetos, ehoqq1, ashisstuff, AvonD, femto113, palpot, LehanLehan, misko, Krisonium, sorryimLate, Vodakhan , mercierus, sth, susadoraku, Doofenschmirtz, SKORP17, virus_dave, Mitsunari, jinkela114514, Geb, han233ing, Possum, PippoForte
Full list

Comments

on 6. March 2024, 20:37 by sorryimLate
Beatiful loop logic once again with just a few small well-placed clues!

on 2. March 2024, 22:00 by ashisstuff
felt closer to 3* for me, but on the harder side so 4* is probably fair. liked how the sums interacted for the break-in, very fun :3

on 2. March 2024, 16:10 by yttrio
I'm really happy to see a RSL loop puzzle work so well with the zipper clues! This has some really nice math-based deductions to determine how the loop needs to go!

on 2. March 2024, 15:13 by samuel1997
Wonderful puzzle!

on 2. March 2024, 14:59 by Snookerfan
Very nice puzzle! I had a lot of trouble figuring out box 7, the rest went smoothly. Thank you.

Difficulty:4
Rating:93 %
Solved:32 times
Observed:11 times
ID:000H5D

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